Blue in RGB laser is offset

[donkeykong]

Hey everyone, I bought a Shinp laser off of ebay, this is the exact one: http://www.ebay.com:80/itm/ws/eBayIS...E:L:OC:AU:3160

Its a cheaper quality laser and there is an issue with it in that the blue colour is slightly offset in the Y direction from the other colours. The picture below shows what I mean:



Is there anyway to fix this?

[donkeykong]

The photo isn't very good but its the best I can do you can see there is a blue line underneath the R+G line, this should all be together and also the problem seems to be worse in the Y plane rather than the X plane.

[Things]

You will need to open it up and adjust the dichroic mirror in front of the blue laser. I think most of those cheap Chinese lasers use crappy L bracket mounts, so you need to carefully bend it back into line. Watch out for reflections!

[donkeykong]

thanks for the reply things i'll try that.